Thomas jack



(Nn Model.)

'I'. JACK.

. DRIVINGBELT.. 110.252,10). Patented Jan. 10,1882.

mi Il II WI TJV' ESSES UNITED STATES PATENT OFFICE. v

THOMAS JACK, OF AUBURN, NEW YORK.

VDRIVING-BELT.

SPECIFICATION forming part of Letters Patent No. 252,109, dated January 10, 1882. Application filed November 25, 1881. (No model.)

To all whom it may concern B e it known that I, THOMAS JACK, of Auburn,in the conntyofOayuga and State of New York, have invented certain new and useful Improvements in Driving-Belts; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to malte and use the same, reference being had to the accompanying drawings, 'which form a part of this specitication.

Figure 1 is a plan view, and Fig. 2 is a lopgitudinal vertical sectional view.

`Similar letters 'of reference indicate corresponding parts in both figures.

This invention relates to driving belts for communicating motion in all kinds of' machinery; and it consists in 'certain improvements inthe construction of the same, which will be hereinafter fully described, and particularly pointed out in the claims.

My improved drive belt consists of a series ot' links or plates suitably hinged together, as

shown, so as to be capable of traveling upon the wheels or pulleys, from one of which motion is to be communicated to the other. Ot' the said links or plates constituting the drivebelt, every alternate one (represented by A) is solid or im perforate. The intermediate links or plates, which are represented by B, haveperforations or openings oblong or elliptical in sha-pe, provided with upward-projecting circumferential flanges B', and located in alternate plates on opposite sides of the belt, as shown respectively at C and D.

E E represent the wheels or pulleys connected by myim proved drive-belt. Said wheels or pulleys are provided with ratlially-Lxtending lugs or studs F G, located alternately ad- 4o joining the opposite sides thereof, so as to eugage the openings C D ot' the links B of the drive-belt.

4Loose wear-plates may also be adjusted upon iianges B when, after long use, they shall be so worn as to cause the belt to slip. Owing to the peculiar arrangement of studsl F G Eand openings O D, the strain is evenly distributed, the motion is even and steady, and the elrain isnot liable to become disengaged.

I claim- 1. A drive-belt consisting ot alternate imperi'orate or solid and perforated platesthe perforations heilig arranged alternately on .op-

posite sides of a longitudinal central line, substantially as set forth.

2. Thecombination, withthedriving-pulleys having radiallyprojecting lugs or studs arranged alternately onoppositesides, of a driving-belt consisting ot' alternate solidand perforated plates, the pert'orations being` arranged alternately ou opposite sides of a central longitudinal line, so as to engage the studs ot' the driving-pulleys, substantially as set l'orth.

3. In a drive-belt, the plates B, having perforations surrounded by upward projecting` flanges, substantially as and for the purpose set forth.

In testimony that I claim the foregoing Vas my own I have hereto atlixed my signature in presence of two witnesses.

THOMAS JACK.

Vitnesses:

JOHN WILLEAN HUTCHINSON, GEORGE ORTEN REAPER. 

